Classifications

• • C—CHEMISTRY; METALLURGY
  • C07—ORGANIC CHEMISTRY
  • C07D—HETEROCYCLIC COMPOUNDS
  • C07D501/00—Heterocyclic compounds containing 5-thia-1-azabicyclo [4.2.0] octane ring systems, i.e. compounds containing a ring system of the formula:, e.g. cephalosporins; Such ring systems being further condensed, e.g. 2,3-condensed with an oxygen-, nitrogen- or sulfur-containing hetero ring
  • C07D501/14—Compounds having a nitrogen atom directly attached in position 7
  • C07D501/16—Compounds having a nitrogen atom directly attached in position 7 with a double bond between positions 2 and 3
  • C07D501/20—7-Acylaminocephalosporanic or substituted 7-acylaminocephalosporanic acids in which the acyl radicals are derived from carboxylic acids
  • C07D501/24—7-Acylaminocephalosporanic or substituted 7-acylaminocephalosporanic acids in which the acyl radicals are derived from carboxylic acids with hydrocarbon radicals, substituted by hetero atoms or hetero rings, attached in position 3
  • C07D501/36—Methylene radicals, substituted by sulfur atoms
• • A—HUMAN NECESSITIES
  • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
  • A61P—SPECIFIC THERAPEUTIC ACTIVITY OF CHEMICAL COMPOUNDS OR MEDICINAL PREPARATIONS
  • A61P31/00—Antiinfectives, i.e. antibiotics, antiseptics, chemotherapeutics
  • A61P31/04—Antibacterial agents

Definitions

• the present invention relates to derivatives of the cephalosporin family, their preparation process and their therapeutic application.
• the double bond of the isothiouronium function can be localized as shown in the formula for compound (1).
• the compounds (1) exist in two syn and anti isomeric forms.
• the syn isomers with higher therapeutic activity are the preferred compounds.
• the invention also relates to a process for the preparation of the compounds of formula (I).
• This process consists in first of all acycling the 7-amino-3-bromomethyl-3 cephem-3-tert-butyl carboxylate S-oxide (II) by the acid (III) according to the following reaction scheme in which R ' l represents l 't-butyl ester corresponding to R 1 .
• the groups usually used in organic synthesis can be used for the protection of amino groups and, in particular, the trityl group.
• the substituent R of acid (III) contains a carboxylic group
• an ester that is sufficiently labile is chosen to be able to regenerate the acid function at the end of the reaction. Most commonly used is the tert-butyl ester.
• the activation reaction is carried out in a suitable organic solvent such as tetrahydrofuran at a temperature between 0 and 50 ° C and, preferably, at room temperature.
• a suitable organic solvent such as tetrahydrofuran
• the activation reaction is optionally facilitated by adding a hydroxylated derivative such as 1-hydroxybenzotriazole.
• the solution of acylation reagent thus obtained, freed by filtration of the dicyclohexylurea formed, is added to a solution of compound (II) in a solvent such as dimethylformamide.
• a solvent such as dimethylformamide.
• the acylation can also be carried out with the acid chloride of (III):
• the operation is carried out in a suitable solvent such as dimethylformamide or N, N-dimethylacetamide in the presence of a base such as triethylamine.
• a suitable solvent such as dimethylformamide or N, N-dimethylacetamide
• a base such as triethylamine.
• the protective group on the amine and the tert-butyl ester group (s) are eliminated by a known process, in particular by hydrolysis in an acid medium using an organic acid such as formic acid or trifluoroacetic acid or a hydrochloric acid - acetic acid mixture.
• R 2 , R 3 , R 45 R 5 represent alkyl or alkenyl groups are prepared according to the methods described in: EH RODD, Chemistry of Aliphatic compounds, vol. IB. Elsevier, 1952, 924-929.
• the thioureas in which R 4 and R 5 taken together with the nitrogen atom to which they are bonded form a 5- or 6-membered ring nucleus are prepared from dimethylthio-carbamoyl chloride or methyl isothiocyanate on which reacts the nitrogen heterocycle according to the reaction scheme below:
• the mineral salts are obtained by action on the compounds (I) in which A is H of a mineral base such as soda or potash or sodium bicarbonate in equimolecular amount; the salification reaction is carried out in a solvent such as water or ethanol and the salt obtained is isolated by evaporation of the solution.
• A is H of a mineral base such as soda or potash or sodium bicarbonate in equimolecular amount; the salification reaction is carried out in a solvent such as water or ethanol and the salt obtained is isolated by evaporation of the solution.
• the salt is isolated by precipitation with ether.
• esters are obtained by known methods of esterification; for example, advantageously use the action of a halogenated derivative on a salt such as the sodium salt of the acid; the reaction will preferably be carried out in a solvent capable of dissolving the starting acid derivative, for example in dimethylformamide.
• the syn and anti isomers are obtained by a suitable choice of reagents or experimental conditions.
• the products according to the invention do not have a clear melting point, but only decomposition points which do not allow them to be characterized.
• the products will therefore be characterized by their nuclear magnetic resonance spectrum recorded at 60 MHz or 250 MHz, the internal standard being hexamethyldisiloxane.
• the spectra are recorded in deuterium dimethyl sulfoxide.
• a suspension of 20 g of (2-tritylamino-thia-zolyl-4) -2 (t-butoxy-carbonyl-2-propyl-2-oxyimino) -2 acetic acid in 100 ml of methylene chloride cooled to 0 ° - 2 is prepared. ° C. 7.3 g of PCl 5 are added slowly and the mixture is stirred for 30 minutes at this temperature. I pour I liter of hexane to precipitate then filter and dry under vacuum to obtain 21.2 g of acid chloride (2-tritylamino-thiazolyl-4) -2 (t-butoxycarbonyl-2-propyl-2 oxyimino) -2 acetic. Melting point: 135 ° C.
• the solid obtained is redissolved in 5 ml of methylene chloride and then chromatographed on 25 g of silica gel, the eluent is a mixture of methylene chloride-methanol 90/10 (vol / vol).
• This product is prepared in the same way and under the same operating conditions as CM 41 089, starting from (2-tritylamino-thiazolyl-4) -2 (t-butoxycarbonyl-1 ethyl-1 oxyimino) -2 acetic acid .
• SR 41 361 A a mixture of 2 diastereoisomers, is identified by its spectrum.
• the products of the invention can therefore be used as antibiotics in human or veterinary medicine. They can be used in all bacterial infections with susceptible germs.
• the products of the invention have been studied as regards their pharmacological properties and, more particularly, the bacteriostatic action.
• the bacteriostatic action in vitro was determined in solid medium by the dilution method.
• the results expressed in minimum inhibitory concentrations relate to the results obtained on different strains.
• compositions are produced from the compounds (I) in their acid form or, when their solubility is insufficient, in the form of a salt.
• compositions can be solid or liquid and can be presented, for example, in the form of tablets, capsules, granules, ointments, creams, gels or injectable preparations.
• the dosage can vary within wide limits, in particular according to the type and severity of the infection to be treated and according to the mode of administration. Most often, in adults by injection, it is between 0.250 g and 4 g per day.

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• Chemical & Material Sciences (AREA)
• Organic Chemistry (AREA)
• Health & Medical Sciences (AREA)
• Life Sciences & Earth Sciences (AREA)
• General Health & Medical Sciences (AREA)
• General Chemical & Material Sciences (AREA)
• Medicinal Chemistry (AREA)
• Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
• Oncology (AREA)
• Pharmacology & Pharmacy (AREA)
• Communicable Diseases (AREA)
• Animal Behavior & Ethology (AREA)
• Chemical Kinetics & Catalysis (AREA)
• Public Health (AREA)
• Veterinary Medicine (AREA)
• Cephalosporin Compounds (AREA)
• Pharmaceuticals Containing Other Organic And Inorganic Compounds (AREA)
• Bakery Products And Manufacturing Methods Therefor (AREA)
• Solid-Sorbent Or Filter-Aiding Compositions (AREA)
• General Preparation And Processing Of Foods (AREA)
• Thiazole And Isothizaole Compounds (AREA)

Priority Applications (1)

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Cited By (5)

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Citations (2)

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• 1982
  • 1982-07-13 FR FR8212317A patent/FR2530248A1/fr active Granted
• 1983
  • 1983-07-07 MA MA20061A patent/MA19841A1/fr unknown
  • 1983-07-08 AT AT83401413T patent/ATE33392T1/de active
  • 1983-07-08 EP EP83401413A patent/EP0099297B1/de not_active Expired
  • 1983-07-08 DE DE8383401413T patent/DE3376213D1/de not_active Expired
  • 1983-07-11 NO NO832515A patent/NO832515L/no unknown
  • 1983-07-11 FI FI832522A patent/FI74286C/fi not_active IP Right Cessation
  • 1983-07-12 GR GR71918A patent/GR79285B/el unknown
  • 1983-07-12 YU YU01496/83A patent/YU149683A/xx unknown
  • 1983-07-12 HU HU832485A patent/HU189712B/hu unknown
  • 1983-07-12 NZ NZ204873A patent/NZ204873A/en unknown
  • 1983-07-12 IL IL69210A patent/IL69210A/xx unknown
  • 1983-07-12 PH PH29214A patent/PH19298A/en unknown
  • 1983-07-12 CA CA000432224A patent/CA1209126A/en not_active Expired
  • 1983-07-12 ES ES524040A patent/ES8405412A1/es not_active Expired
  • 1983-07-12 PT PT77017A patent/PT77017B/pt unknown
  • 1983-07-12 SU SU833622788A patent/SU1194280A3/ru active
  • 1983-07-13 DK DK323183A patent/DK323183A/da not_active Application Discontinuation
  • 1983-07-13 DD DD83253036A patent/DD210054A5/de unknown
  • 1983-07-13 OA OA58062A patent/OA07495A/xx unknown
  • 1983-07-13 AU AU16795/83A patent/AU555185B2/en not_active Ceased
  • 1983-07-13 CS CS835304A patent/CS236797B2/cs unknown
  • 1983-07-13 PL PL1983242988A patent/PL141582B1/pl unknown
  • 1983-07-13 KR KR1019830003186A patent/KR840005455A/ko not_active IP Right Cessation
  • 1983-07-13 JP JP58127512A patent/JPS5973590A/ja active Pending
  • 1983-07-13 ZA ZA835101A patent/ZA835101B/xx unknown
  • 1983-07-16 EG EG83429A patent/EG15964A/xx active
• 1985
  • 1985-04-16 US US06/723,709 patent/US4578377A/en not_active Expired - Fee Related

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